"""
Copyright (c) 2022 Huawei Technologies Co.,Ltd.

openGauss is licensed under Mulan PSL v2.
You can use this software according to the terms and conditions of the Mulan PSL v2.
You may obtain a copy of Mulan PSL v2 at:

          http://license.coscl.org.cn/MulanPSL2

THIS SOFTWARE IS PROVIDED ON AN "AS IS" BASIS, WITHOUT WARRANTIES OF ANY KIND,
EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO NON-INFRINGEMENT,
MERCHANTABILITY OR FIT FOR A PARTICULAR PURPOSE.
See the Mulan PSL v2 for more details.
"""
"""
Case Type   : 极致RTO-数据库系统类
Case Name   : 开启极致RTO，备机进行switchover过程中，备机gs_ctl stop后恢复，关闭极致RTO，主备数据一致
Create At   : 2020/10/15
Owner       : @peilinqian
Description :
    1、开启极致RTO
    2、备机进行switchover
    3、备机数据库进行gs_ctl stop；查询备机数据数据进程状态
    4、switchover结果验证
    5、switchover失败，重启主备；
    6、备机再次进行switchover
    7、新主机创建数据表，并插入数据功能正常
    8、还原主备，原主机进行switchover
    9、还原主机插入数据功能正常
    10、执行完成后，关闭极致RTO
    11、查询主备数据是否一致
    12、插入数据功能正常
Expect      :
    1、开启极致RTO成功
    2、备机开始进行switchover
    3、备机数据库进行gs_ctl stop成功
    4、switchover结果失败
    5、switchover失败，重启主备成功
    6、备机再次进行switchover成功
    7、新主机创建数据表，并插入数据功能正常
    8、还原主备，原主机进行switchover成功
    9、还原主机插入数据功能正常
    10、执行完成后，关闭极致RTO成功
    11、查询主备数据一致
    12、插入数据功能正常
History     :
    modified：2021-3-9 by 5328113;主备同步方法调用修改，增加超时等待时间；
    modified：2021-2-5 by 5328113;guc参数还原时指定还原值
    modified ：2020-11-18 by @peilinqian ；完善TPCC断言；
    modified ：2020-12-14 by @peilinqian ；teardown增加主备异常恢复；
    modified ：2020-12-15 by @peilinqian ；tpcc执行完成后，增加刷盘校验；去掉stop及stop状态断言校验，
        因为可能出现recovery导致失败，最终只保证build及最后结果符合预期即可
    modified ：2021-1-19 by @peilinqian ；重启主备后增加主备同步等待，再断言状态；删除不必要tpcc操作；
        增加主备切换后数据库基本功能验证
    modified:2021-1-28 by 5328113;删除start成功断言，删除不必要tpcc
"""

import time
import unittest

from testcase.utils.ComThread import ComThread
from testcase.utils.Common import Common
from testcase.utils.CommonSH import *
from testcase.utils.Constant import Constant
from testcase.utils.Logger import Logger
from yat.test import Node
from yat.test import macro


class ExtremeRto(unittest.TestCase):
    nodes_tuple = ('PrimaryDbUser', 'Standby1DbUser', 'Standby2DbUser')

    @RestartDbCluster(*nodes_tuple)
    def setUp(self):
        self.log = Logger()
        self.log.info('----Opengauss_Reliability_RTO_Dbsys_Case025:初始化----')

        self.pri_root = Node(node='PrimaryRoot')
        self.pri_dbuser = Node(node='PrimaryDbUser')
        self.sta1_root = Node(node='Standby1Root')
        self.sta1_dbuser = Node(node='Standby1DbUser')
        self.sta2_dbuser = Node(node='Standby2DbUser')
        self.pri_sh = CommonSH('PrimaryDbUser')
        self.sta_1_sh = CommonSH('Standby1DbUser')
        self.sta_2_sh = CommonSH('Standby2DbUser')
        self.com = Common()
        self.constant = Constant()
        self.tpcc_path = macro.TPCC_PATH
        self.MAX_NUM = 10000
        self.table_test = 't_RTO_Dbsys_Case025'
        self.insert_sql = f'''drop table if exists {self.table_test};
            create table {self.table_test}(id int);
            begin 
            for i in 1..{self.MAX_NUM} loop
            insert into {self.table_test} values(i);
            end loop;
            end;'''
        self.select_sql = f'select count(*) from {self.table_test};'
        self.drop_sql = f'drop table {self.table_test};'
        self.node_num = self.com.get_node_num(self.pri_root)
        self.log.info(self.node_num)
        self.max_time = 1200
        self.min_time = 300

    def test_main(self):
        try:
            self.log.info('----1、开启极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'replication_type=1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers=4')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=off')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            self.log.info('----查看主备是否同步----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----2、备机进行switchover----')
            switch_thread = ComThread(self.sta_1_sh.executeGsctl,
                                      args=('switchover',
                                            self.constant.SWITCH_SUCCESS_MSG,
                                            '', False))
            switch_thread.setDaemon(True)
            switch_thread.start()

            self.log.info('----3、备机数据库进行gs_ctl stop----')
            self.sta_1_sh.stopDbInstance()

            self.log.info('----4、switchover结果验证----')
            switch_thread.join()
            switch_result = switch_thread.get_result()
            self.log.info(switch_result)
            self.assertFalse(switch_result)

            self.log.info('----5、switchover失败，重启主备；----')
            self.pri_sh.stopDbCluster()
            self.pri_sh.startDbCluster()

            self.log.info('----查看主备是否同步----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----6、备机再次进行switchover----')
            success_msg = self.constant.SWITCH_SUCCESS_MSG
            switch_result = self.sta_1_sh.executeGsctl('switchover',
                                                       success_msg)
            self.assertTrue(switch_result)

            self.log.info('----进行refresh----')
            refresh_msg = self.sta_1_sh.exec_refresh_conf()
            self.assertTrue(refresh_msg)

            self.log.info('----查看主机query，同步是否正常----')
            self.sta_1_sh.check_location_consistency('primary',
                                                     self.node_num,
                                                     self.min_time)

            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----7、新主机创建数据表，并插入数据功能正常----')
            insert_result = self.sta_1_sh.executDbSql(self.insert_sql)
            self.log.info(insert_result)
            select_result = self.sta_1_sh.executDbSql(self.select_sql)
            self.log.info(select_result)
            self.assertIn(str(self.MAX_NUM), select_result)

            self.log.info('----查看主机query，同步是否正常----')
            self.sta_1_sh.check_location_consistency('primary',
                                                     self.node_num,
                                                     self.min_time)

            self.log.info('----8、还原主备，原主机进行switchover----')
            success_msg = self.constant.SWITCH_SUCCESS_MSG
            switch_result = self.pri_sh.executeGsctl('switchover',
                                                     success_msg)
            self.assertTrue(switch_result)

            self.log.info('----进行refresh----')
            refresh_msg = self.pri_sh.exec_refresh_conf()
            self.assertTrue(refresh_msg)

            self.log.info('----查看主机query，同步是否正常----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)

            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

            self.log.info('----9、还原主机插入数据功能正常----')
            insert_result = self.pri_sh.executDbSql(self.insert_sql)
            self.log.info(insert_result)
            select_result = self.pri_sh.executDbSql(self.select_sql)
            self.log.info(select_result)
            self.assertIn(str(self.MAX_NUM), select_result)

            self.log.info('----查看主机query，同步是否正常----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)

            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

        finally:
            self.log.info('----10、执行完成后，关闭极致RTO----')
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_parse_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'recovery_redo_workers = 1')
            self.assertTrue(msg)
            msg = self.pri_sh.executeGsguc('set',
                                           self.constant.GSGUC_SUCCESS_MSG,
                                           'hot_standby=on')
            self.assertTrue(msg)
            # 重启数据库配置文件生效
            self.pri_sh.stopDbCluster()
            time.sleep(2)
            self.pri_sh.startDbCluster()

            # 校验备机是否完成数据同步
            self.log.info('校验备机是否完成数据同步')
            flag_1 = self.sta_1_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_1)
            flag_2 = self.sta_2_sh.check_location_consistency('standby',
                                                              self.node_num,
                                                              self.min_time)
            self.assertTrue(flag_2)

            self.log.info('----11、查询主备数据是否一致----')
            nodes_tuple = (self.pri_dbuser,
                           self.sta1_dbuser,
                           self.sta2_dbuser)
            flag = self.com.check_data_sample_by_all(r'\d', *nodes_tuple)
            self.assertTrue(flag)

            table_dict = self.com.format_sql_result(
                self.pri_sh.executDbSql(r'\d'))
            table_name = table_dict.get('Name')
            for name in table_name:
                select_sql = f'select count(*) from {name};'
                flag = self.com.check_data_sample_by_all(
                    select_sql, *nodes_tuple)
                self.assertTrue(flag)

            self.log.info('----12、创建数据表，并插入数据功能正常----')
            insert_result = self.pri_sh.executDbSql(self.insert_sql)
            self.log.info(insert_result)
            select_result = self.pri_sh.executDbSql(self.select_sql)
            self.log.info(select_result)
            self.assertIn(str(self.MAX_NUM), select_result)

            self.log.info('----查看主机query，同步是否正常----')
            self.pri_sh.check_location_consistency('primary',
                                                   self.node_num,
                                                   self.min_time)
            self.log.info('----查询主备状态----')
            status = self.pri_sh.getDbClusterStatus('status')
            self.assertTrue(status)

    def tearDown(self):
        self.log.info('----恢复主备关系-----------------')
        host_name = self.pri_root.sh('hostname').result()
        result = self.pri_sh.check_whether_need_switch(host_name)
        if result:
            success_msg = self.constant.SWITCHOVER_SUCCESS_MSG
            result = self.pri_sh.executeGsctl('switchover', success_msg)
            self.log.info(result)
            result = self.pri_sh.exec_refresh_conf()
            self.log.info(result)

        self.log.info('----清理测试表----')
        drop_result = self.pri_sh.executDbSql(self.drop_sql)
        self.log.info(drop_result)

        self.log.info('----校验刷脏页是否完成----')
        self.pri_sh.check_whether_remain_dirty_page()

        self.log.info('----Opengauss_Reliability_RTO_Dbsys_Case025:执行完毕----')
